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helm: increase performance a bit

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* use single precision floats for synth
* enable vectorization for gcc

Signed-off-by: Andreas Müller <schnitzeltony@googlemail.com>
This commit is contained in:
Andreas Müller
2017-08-04 20:08:55 +02:00
parent 45521c0286
commit 8331ecdad0
3 changed files with 240 additions and 0 deletions
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29
recipes-misc/recipes-multimedia/helm/files/0004-set-VECTORIZE_LOOP-for-gcc.patch Normal file
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@@ -0,0 +1,29 @@
From fd718ad28ae3bbf85a5159cef5c0cec1824bbc97 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Andreas=20M=C3=BCller?= <schnitzeltony@googlemail.com>
Date: Fri, 4 Aug 2017 16:05:29 +0200
Subject: [PATCH 1/2] set VECTORIZE_LOOP for gcc
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Signed-off-by: Andreas Müller <schnitzeltony@googlemail.com>
---
mopo/src/common.h | 2 ++
1 file changed, 2 insertions(+)
diff --git a/mopo/src/common.h b/mopo/src/common.h
index 9af1f5b..1ef4ce8 100644
--- a/mopo/src/common.h
+++ b/mopo/src/common.h
@@ -33,6 +33,8 @@
#define VECTORIZE_LOOP _Pragma("clang loop vectorize(enable) interleave(enable)")
#elif _MSC_VER
#define VECTORIZE_LOOP __pragma(loop(hint_parallel(8)))
+#elif __GNUC__
+#define VECTORIZE_LOOP _Pragma("GCC ivdep")
#else
#define VECTORIZE_LOOP
#endif
--
2.9.4

209
recipes-misc/recipes-multimedia/helm/files/0005-use-single-precision-floats-it-performs-much-better.patch Normal file
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@@ -0,0 +1,209 @@
From 5e2f557a9c20cf8a7bd4f777db2e4883741fc085 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Andreas=20M=C3=BCller?= <schnitzeltony@googlemail.com>
Date: Fri, 4 Aug 2017 13:13:24 +0200
Subject: [PATCH 2/2] use single precision floats - it performs much better
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Upstream-Status: Pending
Signed-off-by: Andreas Müller <schnitzeltony@googlemail.com>
---
mopo/src/arpeggiator.cpp | 2 +-
mopo/src/common.h | 2 +-
mopo/src/state_variable_filter.cpp | 14 +++++++-------
mopo/src/utils.h | 24 ++++++++++++------------
src/common/synth_base.cpp | 4 ++--
5 files changed, 23 insertions(+), 23 deletions(-)
diff --git a/mopo/src/arpeggiator.cpp b/mopo/src/arpeggiator.cpp
index 1aa7786..7c7bddd 100644
--- a/mopo/src/arpeggiator.cpp
+++ b/mopo/src/arpeggiator.cpp
@@ -42,7 +42,7 @@ namespace mopo {
mopo_float frequency = input(kFrequency)->at(0);
mopo_float min_gate = (MIN_VOICE_TIME + VOICE_KILL_TIME) * frequency;
- mopo_float gate = utils::interpolate(min_gate, 1.0, input(kGate)->at(0));
+ mopo_float gate = utils::interpolate(min_gate, (mopo_float)1.0, input(kGate)->at(0));
mopo_float delta_phase = frequency / sample_rate_;
mopo_float new_phase = phase_ + buffer_size_ * delta_phase;
diff --git a/mopo/src/common.h b/mopo/src/common.h
index 1ef4ce8..790b6c0 100644
--- a/mopo/src/common.h
+++ b/mopo/src/common.h
@@ -41,7 +41,7 @@
namespace mopo {
- typedef double mopo_float;
+ typedef float mopo_float;
const mopo_float PI = 3.1415926535897932384626433832795;
const int MAX_BUFFER_SIZE = 256;
diff --git a/mopo/src/state_variable_filter.cpp b/mopo/src/state_variable_filter.cpp
index 105deac..8c207b8 100644
--- a/mopo/src/state_variable_filter.cpp
+++ b/mopo/src/state_variable_filter.cpp
@@ -161,14 +161,14 @@ namespace mopo {
MOPO_ASSERT(cutoff > 0.0);
if (db24)
- resonance = sqrt(resonance);
+ resonance = sqrtf(resonance);
mopo_float g = tan(PI * utils::min(cutoff / sample_rate_, 0.5));
mopo_float k = 1.0 / resonance;
- mopo_float low_pass_amount = sqrt(utils::clamp(1.0 - blend, 0.0, 1.0));
- mopo_float band_pass_amount = sqrt(utils::clamp(1.0 - fabs(blend - 1.0), 0.0, 1.0));
- mopo_float high_pass_amount = sqrt(utils::clamp(blend - 1.0, 0.0, 1.0));
+ mopo_float low_pass_amount = sqrtf(utils::clamp(1.0 - blend, 0.0, 1.0));
+ mopo_float band_pass_amount = sqrtf(utils::clamp(1.0 - fabs(blend - 1.0), 0.0, 1.0));
+ mopo_float high_pass_amount = sqrtf(utils::clamp(blend - 1.0, 0.0, 1.0));
target_m0_ = 0.0;
target_m1_ = band_pass_amount;
@@ -189,14 +189,14 @@ namespace mopo {
MOPO_ASSERT(gain >= 0.0);
MOPO_ASSERT(cutoff > 0.0);
- gain = sqrt(gain);
+ gain = sqrtf(gain);
mopo_float g = tan(PI * utils::min(cutoff / sample_rate_, 0.5));
mopo_float k = 1.0;
switch(choice) {
case kLowShelf: {
- g /= sqrt(gain);
+ g /= sqrtf(gain);
target_m0_ = 1.0;
target_m1_ = k * (gain - 1.0);
target_m2_ = gain * gain - 1.0;
@@ -210,7 +210,7 @@ namespace mopo {
break;
}
case kHighShelf: {
- g *= sqrt(gain);
+ g *= sqrtf(gain);
target_m0_ = gain * gain;
target_m1_ = k * gain * (1.0 - gain);
target_m2_ = 1.0 - gain * gain;
diff --git a/mopo/src/utils.h b/mopo/src/utils.h
index 762d5a2..aba450f 100644
--- a/mopo/src/utils.h
+++ b/mopo/src/utils.h
@@ -92,15 +92,15 @@ namespace mopo {
#else
inline mopo_float min(mopo_float one, mopo_float two) {
- return fmin(one, two);
+ return fminf(one, two);
}
inline mopo_float max(mopo_float one, mopo_float two) {
- return fmax(one, two);
+ return fmaxf(one, two);
}
inline mopo_float clamp(mopo_float value, mopo_float min, mopo_float max) {
- return fmin(max, fmax(value, min));
+ return fminf(max, fmaxf(value, min));
}
#endif
@@ -120,7 +120,7 @@ namespace mopo {
return fmaf(t, to - from, from);
}
- inline mopo_float mod(double value, double* integral) {
+ inline double mod(double value, double* integral) {
return modf(value, integral);
}
@@ -182,35 +182,35 @@ namespace mopo {
}
inline mopo_float quickTanh(mopo_float value) {
- mopo_float abs_value = fabs(value);
+ mopo_float abs_value = fabsf(value);
mopo_float square = value * value;
mopo_float num = value * (2.45550750702956 + 2.45550750702956 * abs_value +
square * (0.893229853513558 + 0.821226666969744 * abs_value));
mopo_float den = 2.44506634652299 + (2.44506634652299 + square) *
- fabs(value + 0.814642734961073 * value * abs_value);
+ fabsf(value + 0.814642734961073 * value * abs_value);
return num / den;
}
// Version of quick sin where phase is is [-0.5, 0.5]
inline mopo_float quickerSin(mopo_float phase) {
- return phase * (8.0 - 16.0 * fabs(phase));
+ return phase * (8.0 - 16.0 * fabsf(phase));
}
inline mopo_float quickSin(mopo_float phase) {
mopo_float approx = quickerSin(phase);
- return approx * (0.776 + 0.224 * fabs(approx));
+ return approx * (0.776 + 0.224 * fabsf(approx));
}
// Version of quick sin where phase is is [0, 1]
inline mopo_float quickerSin1(mopo_float phase) {
phase = 0.5 - phase;
- return phase * (8.0 - 16.0 * fabs(phase));
+ return phase * (8.0 - 16.0 * fabsf(phase));
}
inline mopo_float quickSin1(mopo_float phase) {
mopo_float approx = quickerSin1(phase);
- return approx * (0.776 + 0.224 * fabs(approx));
+ return approx * (0.776 + 0.224 * fabsf(approx));
}
inline bool isSilent(const mopo_float* buffer, int length) {
@@ -227,13 +227,13 @@ namespace mopo {
for (int i = 0; i < num; ++i)
square_total += buffer[i] * buffer[i];
- return sqrt(square_total / num);
+ return sqrtf(square_total / num);
}
inline mopo_float peak(const mopo_float* buffer, int num, int skip) {
mopo_float peak = 0.0;
for (int i = 0; i < num; i += skip)
- peak = fmax(peak, fabs(buffer[i]));
+ peak = fmaxf(peak, fabsf(buffer[i]));
return peak;
}
diff --git a/src/common/synth_base.cpp b/src/common/synth_base.cpp
index f24eb01..95b476a 100644
--- a/src/common/synth_base.cpp
+++ b/src/common/synth_base.cpp
@@ -21,7 +21,7 @@
#include "synth_gui_interface.h"
#include "utils.h"
-#define OUTPUT_WINDOW_MIN_NOTE 16.0
+#define OUTPUT_WINDOW_MIN_NOTE ((mopo::mopo_float)16.0)
SynthBase::SynthBase() {
controls_ = engine_.getControls();
@@ -298,7 +298,7 @@ void SynthBase::updateMemoryOutput(int samples, const mopo::mopo_float* left,
while (memory_reset_period_ < window_length)
memory_reset_period_ += memory_reset_period_;
- memory_reset_period_ = std::min(memory_reset_period_, 2.0 * window_length);
+ memory_reset_period_ = std::min(memory_reset_period_, ((mopo::mopo_float)2.0) * window_length);
memory_index_ = 0;
mopo::utils::copyBufferf(output_memory_, output_memory_write_, 2 * mopo::MEMORY_RESOLUTION);
}
--
2.9.4

2
recipes-misc/recipes-multimedia/helm/helm_git.bb
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@@ -25,6 +25,8 @@ SRC_URI += " \
file://0001-Makefile-remove-machine-detection-it-won-t-work-for-.patch \
file://0002-do-not-create-ttl-files-it-won-t-work-fo-cross.patch \
file://0003-use-standard-vst-path.patch \
file://0004-set-VECTORIZE_LOOP-for-gcc.patch \
file://0005-use-single-precision-floats-it-performs-much-better.patch \
"
SRCREV = "927d2ed27f71a735c3ff2a1226ce3129d1544e7e"
PV = "0.9.0"